<template>
  <div class="">
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>权限管理</el-breadcrumb-item>
      <el-breadcrumb-item>角色列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图 -->
    <el-card>
      <el-row :gutter="10">
        <el-col :span="6">
          <el-button type="primary" @click="addDialogVisible = true">添加角色</el-button>
        </el-col>
      </el-row>
      <el-table :data="rolist" style="width: 100%" border stripe>
        <!-- 展示列 -->
        <el-table-column type="expand">
          <template slot-scope="scope">
            <el-row :class="['bdbottom',i1==0 ? 'bdtop':'','vcenter']" v-for="(item1,i1) in scope.row.children" :key="item1.id">
              <!-- 渲染一级权限 -->
              <el-col :span="5">
                <el-tag type="primary" @close="removeRightById(scope.row,item1.id)" closable>{{ item1.authName }}</el-tag>
                <i class="el-icon-caret-right"></i>
              </el-col>
              <!-- 渲染二级和三级权限 -->
              <el-col :span="19">
                <el-row :class="[i2===0 ?'':'bdtop','vcenter']" v-for="(item2,i2) in item1.children" :key="item2.id">
                  <el-col :span="6">
                    <el-tag type="success" @close="removeRightById(scope.row,item2.id)" closable>{{ item2.authName }}</el-tag>
                    <i class="el-icon-caret-right"></i>
                  </el-col>
                  <el-col :span="18">
                    <el-tag type="warning" @close="removeRightById(scope.row,item3.id)" closable v-for="(item3,i3) in item2.children" :key="item3.id">{{ item3.authName }}</el-tag>
                  </el-col>
                </el-row>
              </el-col>
            </el-row>
          </template>
        </el-table-column>
        <!-- 索引列 -->
        <el-table-column type="index"></el-table-column>
        <el-table-column prop="roleName" label="角色名称"></el-table-column>
        <el-table-column prop="roleDesc" label="角色描述"></el-table-column>
        <el-table-column label="操作">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)">编辑</el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeRoleById(scope.row.id)">删除</el-button>
            <el-button type="warning" @click="showSetRightDialog(scope.row)" icon="el-icon-setting" size="mini">分配权限</el-button>
          </template>
        </el-table-column>
      </el-table>
    </el-card>
    <!-- 分配权限对话框 -->
    <el-dialog title="分配权限" @close="setRightDialogClosed" :visible.sync="setRightDialogVisible" width="50%">
      <!-- 树形控件 -->
      <el-tree :data="rightslist" :props="treeProps" show-checkbox default-expand-all 
      node-key="id" :default-checked-keys="defKeys" ref="treeRef">
      </el-tree>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRightDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="allotRights">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 添加角色对话框 -->
    <el-dialog title="添加角色" :visible.sync="addDialogVisible" width="50%" @close="addDialogClosed">
      <el-form ref="addFormRef" :model="addForm" :rules="addFormRules" label-width="80px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="addForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="addForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="addRole">确 定</el-button>
      </span>
    </el-dialog>
    <!-- 修改角色信息 -->
     <el-dialog title="修改角色" :visible.sync="editDialogVisible" width="50%" @close="editDialogClosed">
      <el-form ref="editFormRef" :model="editForm" :rules="editFormRules" label-width="80px">
        <el-form-item label="角色名称" prop="roleName">
          <el-input v-model="editForm.roleName"></el-input>
        </el-form-item>
        <el-form-item label="角色描述" prop="roleDesc">
          <el-input v-model="editForm.roleDesc"></el-input>
        </el-form-item>
      </el-form>
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="editrolesInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>
<script type="text/ecmascript-6">
export default {
  name:'Roles', 
  data() {
    return {
      rolist:[], //所有角色列表数据
      setRightDialogVisible:false, //分配权限显示
      rightslist:[],//所有权限的数据
      treeProps:{//树形控件绑定的对象
        label:"authName",
        children:"children"
      },
      defKeys:[],//默认选中的节点id数组
      roleId:"",//当前即将分配权限的角色id
      addDialogVisible:false, //显示添加角色对话框
      addForm:{//添加角色的表单数据
        roleName:"",
        roleDesc:""
      },
      addFormRules:{//添加角色表单规则
        roleName:[
          {required:true,message:"请输入角色名称",trigger:"blur"},
          {min:2,max:10,message:"角色名的长度在2-10个字符之间",trigger:"blur"}
        ],
        roleDesc:[
          {required:true,message:"请输入角色描述",trigger:"blur"},
        ]
      },
      editDialogVisible:false,//显示修改角色对话框
      editForm:{},//查询到用户信息
      editFormRules:{
        roleName:[
          {required:true,message:"请输入角色名称",trigger:"blur"},
          {min:2,max:10,message:"角色名的长度在2-10个字符之间",trigger:"blur"}
        ],
        roleDesc:[
          {required:true,message:"请输入角色描述",trigger:"blur"},
        ]
      }
    }
},
  components:{},
  created(){
    this.getRolesList()
  },
  methods:{
    //获取角色列表数据
   async getRolesList(){
     const {data:res} = await this.$http.get("/roles")
     if(res.meta.status !== 200){
       return this.$http.error("获取角色列表失败!")
     }
     this.rolist = res.data
     console.log(this.rolist)
    },
    //根据id删除对应的权限
    async removeRightById(role,rightid){
      const confirmResult = await this.$confirm('此操作将永久删除该文件, 是否继续?', '提示',
      {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err=>err)
      if(confirmResult!=="confirm"){
        return this.$message.info("取消了删除!")
      }
      const {data:res} = await this.$http.delete(`roles/${role.id}/rights/${rightid}`)
      if(res.meta.status !== 200){
        return this.$message.error("删除权限失败!")
      }
      //删除成功，服务器返回返回新的权限数据，如果调用重新获取权限会整个表单重新渲染
      role.children = res.data
    },
    //显示分配权限对话框
    async showSetRightDialog(role){
      //获取所有权限的数据
      this.roleId = role.id //保存角色id
      const {data:res} = await this.$http.get("rights/tree")
      if(res.meta.status !==200){
        return this.$message.error("获取显现数据失败!")
      }
      this.rightslist = res.data
      //调用递归获取所有三级权限id
      this.getLeafKeys(role,this.defKeys)
      this.setRightDialogVisible = true
    },
    //通过递归，获取角色下所有三级权限的id
    getLeafKeys(node,arr){
      if(!node.children){
        return arr.push(node.id)
      }
      node.children.forEach(item => {
        this.getLeafKeys(item,arr)
      });
    },
    //关闭分配权限对话框
    setRightDialogClosed(){
      this.defKeys=[]
    },
    //分配权限对话框，确定按钮 ...展开数组 获取选中节点，和版选中节点
    async allotRights(){
      const keys = [...this.$refs.treeRef.getCheckedKeys(),...this.$refs.treeRef.getHalfCheckedKeys()]
      const idStr = keys.join(',')
      const {data:res} = await this.$http.post(`roles/${this.roleId}/rights`,{rids:idStr})
      if(res.meta.status!==200){
        this.$message.error("分配权限失败!")
      }
      this.$message.success("分配权限成功!")
      this.getRolesList()
      this.setRightDialogVisible = false
    },
    addRole(){//添加角色按钮，确定
      this.$refs.addFormRef.validate(async valid=>{
        if(!valid) return
        const{ data:res } = await this.$http.post("roles",this.addForm)
        if(res.meta.status != 201){
          return this.$message.error("添加角色失败!")
        }
        this.$message.success("添加角色成功!")
        this.getRolesList()
        this.addDialogVisible = false
      })
    },
    //监听关闭添加角色对话框
    addDialogClosed(){
      this.$refs.addFormRef.resetFields()
    },
    //删除角色
    removeRoleById(id){
      this.$confirm('此操作将永久删除该角色, 是否继续?', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).then(async()=>{
        const {data:res} = await this.$http.delete("roles/"+id)
        if(res.meta.status!==200){
          this.$message.error("删除角色失败!")
        }
        this.getRolesList()
        this.$message.success("删除角色成功!")
      }).catch(()=>{
        this.$message.info("已取消删除!")
      })
    },
    //显示修改角色信息对话框
    async showEditDialog(id){
      const {data:res} = await this.$http.get("roles/" + id)
      if(res.meta.status!==200){
        return this.$message.error("查询用户信息失败!")
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    editDialogClosed(){
      this.$refs.editFormRef.resetFields()
    },
    //修改角色信息确定按钮
    editrolesInfo(){
      this.$refs.editFormRef.validate(async (valid)=>{
        if(!valid) return
        const {data:res} = await this.$http.put("roles/" + this.editForm.roleId,{
          roleName:this.editForm.roleName,
          roleDesc:this.editForm.roleDesc
        })
        if(res.meta.status!=200){
          return this.$message.error("更新角色信息失败!")
        }
        this.getRolesList()
        this.editDialogVisible = false
        this.$message.success("更新角色信息成功!")
      })


    }
  }

}
</script>
<style lang="scss" scoped>
// pre标签可以根据预先设置的内容显示格式
.el-tag{
  margin:7px;
}
.bdtop{
  border-top: 1px solid #eee;
}
.bdbottom{
  border-bottom: 1px solid #eee;
}
.vcenter{
  display: flex;
  align-items: center;
}
</style>
<style scoped>
.el-form >>> .el-form-item.is-success .el-input__inner, .el-form-item.is-success .el-input__inner:focus, .el-form-item.is-success .el-textarea__inner, .el-form-item.is-success .el-textarea__inner:focus{
  border-color: #67c23a !important;
}
</style>